Disc brake, brake caliper and brake pad set for a disc brake

Abstract

A disc brake, preferably pneumatically actuated, in particular for a motor vehicle, including a brake disc with a brake disc axis, a brake caliper, in particular a sliding caliper, with a brake application section and a caliper back which are connected via tension struts, and at least two brake pads with in each case one brake pad carrier. Of the brake pads, an application-side brake pad is assigned to the brake application section and a back-side brake pad is assigned to the caliper back. The brake pad carrier of the back-side brake pad and the caliper back of the brake caliper are in contact via at least one pair of contact surfaces. One contact surface of the at least one pair of contact surfaces is an end surface of a projection, and the other contact surface of the at least one pair of contact surfaces is a bottom surface of a recess.

What is claimed is: 
     
       1. A disc brake having a brake disc, comprising:
 a brake caliper that extends over the brake disc, the brake caliper having an application section and a caliper back, the application section and the caliper back being connected via tension struts; 
 two brake pads, each having a brake pad carrier for a friction material, one brake pad of the two brake pads being an application-side brake pad assigned to the application section of the brake caliper and another of the two brake pads being a back-side brake pad assigned to the caliper back of the brake caliper, 
 wherein
 the brake pad carrier of the back-side brake pad and the caliper back of the brake caliper are in contact via a pair of contact surfaces, 
 one contact surface of the pair of contact surfaces is an end surface of a projection, 
 the other contact surface of the pair of contact surfaces is a bottom surface of a recess, 
 the pair of contact surfaces are circular, planar and are in the same plane, 
 the pair of contact surfaces are co-axially aligned with respective brake application threaded tube units in the brake caliper application section, and 
 an extent of a protrusion of the projection and a depth of the recess forming the other contact surface is such that a free surface of the caliper back is not in contact with the brake pad carrier of the back-side brake pad. 
 
 
     
     
       2. The disc brake according to  claim 1 , wherein
 the projection forming the one contact surface and the recess forming the other contact surface correspond with one another and interact with one another in a form-fitting manner in an installed state of the back-side brake pad in the brake caliper. 
 
     
     
       3. The disc brake according to  claim 1 , wherein
 the projection forming the one contact surface is integrally formed on the caliper back of the brake caliper, and 
 the recess forming the other contact surface is molded into the brake pad carrier of the back-side brake pad. 
 
     
     
       4. The disc brake according to  claim 3 , wherein
 the projection forming the one contact surface protrudes from a machined free surface of the caliper back in a direction of the brake disc. 
 
     
     
       5. The disc brake according to  claim 1 , wherein the application device further comprises a pivotable brake lever. 
     
     
       6. The disc brake according to  claim 1 , further comprising:
 a readjustment device inserted into the threaded tube. 
 
     
     
       7. The disc brake according to  claim 1 , wherein the disc brake is a pneumatically actuated disc brake for a motor vehicle. 
     
     
       8. The disc brake according to  claim 7 , wherein the brake caliper is a sliding caliper. 
     
     
       9. A brake pad set for a disc brake according to  claim 1 , comprising:
 the application-side brake pad and the back-side brake pad, 
 wherein the back-side brake pad has the recess forming the other contact surface of the pair of contact surfaces, which recess receives the projection forming the one contact surface of the pair of contact surfaces. 
 
     
     
       10. The brake pad set according to  claim 9 , wherein both the application-side brake pad and the back-side brake pad have a pad retaining spring arranged on an upper side thereof. 
     
     
       11. A brake caliper of a disc brake, comprising:
 an application section; 
 a caliper back connected to the application section via tension struts, 
 wherein
 the caliper back has a transverse section that extends parallel to a brake disc of the disc brake and at a right angle to a brake disc axis, 
 the transverse section has a contact section carrier with at least one projection on a side facing the brake disc, 
 the projection forming a circular and planar contact surface is configured to engage a corresponding contact recess on a brake pad carrier of a back-side brake pad arrangeable in the brake caliper such that a free surface of the caliper back is not in contact with the brake pad carrier of the back-side brake pad.